Taiwan Semiconductor Corporation P6KE20H

Overview

P6KE20H from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 20V nominal breakdown voltage (VBR min/max: 18.0–22.0V), 16.2V stand-off voltage (VWM), clamping voltage of 29.1V at 21A peak surge current, and AEC-Q101 qualification for automotive-grade reliability.

For engineers reviewing the P6KE20H datasheet, P6KE20H pinout, P6KE20H application, or P6KE20H equivalent, this device is selected for robust ESD and lightning-induced surge suppression in automotive body electronics, industrial sensor interfaces, and 24V control systems where fast response (<1.0ps), low dynamic impedance, and stable clamping under repetitive transients are critical.

Technical Context

The P6KE20H operates as a silicon avalanche diode with unidirectional polarity and single-die construction in a DO-204AC (DO-15) package. Its junction exhibits low dynamic impedance and a temperature coefficient of VBR at 0.090%/°C, enabling predictable voltage clamping across –55°C to +175°C operating range.

It delivers 600W non-repetitive peak pulse power per 10/1000μs waveform, with maximum reverse leakage <1μA at 16.2V and clamping performance verified at 21A IPP. The device meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements.

Key Specifications

Pinout & Package

Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking. Leads are pure tin-plated, solderable per J-STD-002, and meet UL 94V-0 flammability rating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient voltage suppression applications.

Compared with P6KE20A and SMBJ20A, the P6KE20H uniquely combines AEC-Q101 qualification, DO-204AC axial form factor, and 29.1V clamping in a 600W platform-making it the only option for automotive under-hood applications requiring both mechanical robustness and standardized reliability validation.

Availability

P6KE20H is available at Aetrix Electronics and suitable for automotive lighting control, industrial sensor interface, and body control module designs requiring stable component supply and long-lifecycle support.

Supply support for P6KE20H includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and automotive-qualified components.

The P6KE series was developed specifically for high-energy transient suppression in automotive and industrial power systems, emphasizing AEC-Q101 compliance, thermal robustness, and repeatable clamping performance under real-world surge conditions.

FAQ

What is the key difference between P6KE20H and P6KE20A?

The P6KE20H is AEC-Q101 qualified and intended for automotive applications, whereas the P6KE20A shares identical electrical specifications-including 18.0–22.0V VBR, 16.2V VWM, and 29.1V clamping-but lacks automotive qualification. Both use the DO-204AC package and are unidirectional. The P6KE20H is the correct choice for under-hood or safety-critical vehicle systems where standardized reliability validation is mandatory.

Does P6KE20H support bidirectional transient suppression?

No, P6KE20H is a unidirectional TVS diode, indicated by its "H" suffix and absence of "CA" or "C" designation. It protects against reverse-polarity surges only-conduction occurs from cathode to anode when the protected line exceeds VBR. For bidirectional protection (e.g., data lines or AC-coupled signals), a P6KE20CA or equivalent bipolar variant must be used instead of P6KE20H.

What is the maximum peak surge current rating for P6KE20H?

The P6KE20H supports a maximum peak surge current (IPP) of 21A under the standard 10/1000μs double-exponential waveform. This value is derived from its 600W peak pulse power rating and 29.1V clamping voltage (IPP = PPK / VC = 600W / 29.1V ≈ 20.6A, rounded to 21A per datasheet). Derating applies above 25°C ambient per Fig.2 in the official TSC datasheet.

Can P6KE20H be used in place of P6KE20 in a new design?

Yes-P6KE20H replaces P6KE20 with added AEC-Q101 qualification and identical electrical parameters. The "H" suffix denotes automotive qualification; all other specs (VBR, VWM, VC, PPK, package) match. No layout or schematic changes are needed. However, P6KE20H should not be substituted for non-H variants in legacy automotive programs unless qualification documentation is updated to reflect AEC-Q101 compliance.

What does the "H" suffix mean in P6KE20H?

The "H" suffix in P6KE20H indicates AEC-Q101 qualification per the Taiwan Semiconductor ordering code convention (as documented in Page 4 of the P6KE series datasheet). It confirms that the P6KE20H has undergone full automotive-grade stress testing-including temperature cycling, high-temperature operating life, and mechanical shock-making it suitable for automotive electronic control units, lighting, and body electronics where reliability under harsh conditions is mandatory.